Activity recorder: A device to record user's activities using rfids and sensors

Jun'ichi Yura, Hiroshi Sakakibara, Jin Nakazawa, Hideyuki Tokuda

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


We have been investigating a new class of ubiquitous services, called Activity Logging, which takes advantage for private and public sensors and the RFID tags on real-world objects. The purpose of Activity Logging is to digitally record users' interests with real-world objects and users' context to describe the users' activity. Such digital information acquired from a range of sensors and tags, if being accumulated, forms a great data source for users to recall their activities later or to share the activities with others. This paper explores the design space to realize Activity Logging, and proposes a simple mobile device called Activity Recorder that marries public and private sensors to provide a powerful Activity Logging service. An Activity Recorder contains a range of private sensors, and has communication capability to work with public sensors around the user.

Original languageEnglish
Pages (from-to)3480-3495
Number of pages16
JournalIEICE Transactions on Communications
Issue number12
Publication statusPublished - 2007


  • Activity Recorder
  • Life log
  • Mobile device
  • RFID technology
  • Wireless sensors

ASJC Scopus subject areas

  • Software
  • Computer Networks and Communications
  • Electrical and Electronic Engineering


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